What does that Window field in the TCP header do? Many people ask this question after capturing a trace file with Wireshark. What is the TCP Window? How does it work? How can I use it to troubleshoot performance problems? We will answer these questions and more in this nine minute …
Videos
How TCP Works – Acknowledgment Numbers
Let's learn more about TCP. So far, we've looked at the handshake process and how sequence numbers work. Now, let's check out how the acknowledgment process works with TCP. After all, this is a critical component of making TCP a connection-oriented, reliable transport protocol. Understanding …
How TCP Works – Sequence Numbers
TCP is important stuff for network engineers to know. Why? Today's problems aren't so cut-and-dry as they used to be. When a problem strikes, we can't just say "it's not the network" and go along with our day. A core understanding of TCP and how it carries and acknowledges data goes a long way …
How TCP Works – The Handshake
This video is the first in a series that explains how TCP works using Wireshark. The first step in a TCP Connection is establishing a Handshake. This video shows how TCP does its thing. https://youtu.be/HCHFX5O1IaQ …
Sharkfest 2017 – Winning the Network Blame Game
This session was recorded at Sharkfest 2017 - June 19th at Carnegie Mellon University in Pittsburgh. It delves into the reasons why people blame the network for performance problems, why these issues linger, and how network engineers can solve them using Wireshark. I hope this helps you in …
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Troubleshooting with Wireshark – Filtering Out What You Don’t Need
Sometimes packet digging can get tedious. We've all been there. It can be hard to set the right filter that lets us hone in on the root cause. In many cases, it is just as helpful to remove protocols from view that are not probably not related to the problem. At least that will give us …
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